A few weeks ago, NVIDIA introduced the second-generation Maxwell architecture with the GM204 GPU, which is I believe, an incredible chip.
The Maxwell 2 architecture is both highly energy efficient (~2x perf/watt of Kepler in games), and provides a lot of very exciting new graphics features (Some of them are exposed in Direct3D. See the GeForce GTX 980 white paper).
These features are exposed in form of new OpenGL extensions starting with the R344 driver, and the specification for all NVIDIA...

In this presentation, Cass Everitt and John McDonald talk about some newer extensions to OpenGL and how they can reduce (or even eliminate) driver overhead. We'll discuss where performance goes, fundamentals of the graphics driver stack and specific GL extensions--such as Bindless rendering and MultiDraw commands.